Method
Five habits we apply to machines and switchgear.
Write the type-test limits into a selection tool: only tested kits, the right form and ingress rating, the right depth, busbar size per current, module size per cable size. Sales then cannot quote an untested combination.
Test the building blocks once. Show that derived variants follow the same design rules instead of testing every board.
Parts without drawings cannot be audited, checked or competitively quoted. A drawing also settles who owns the design.
Get type-test certificates in the name of the maker who will deliver, then take orders.
Build capability on parts and sub-assemblies first. Add an own product when the base is proven.